<template>
  <div class="login-page">
    <van-nav-bar title="面经登录" />
    <van-form @submit="onSubmit">
      <van-field
        v-model="username"
        name="username"
        label="用户名"
        placeholder="用户名"
        :rules="[
          { required: true, message: '请填写用户名' },
          { pattern: /^\w{3,}/, message: '用户名至少为5位' },
        ]"
      />
      <!-- rules 规则 [ pattern 标准, message 提示信息 ]-->
      <van-field
        v-model="password"
        type="password"
        name="password"
        label="密码"
        placeholder="密码"
        :rules="[
          { required: true, message: '请填写密码' },
          {  pattern: /^\w{3,}/, message: '密码至少为6位' },
        ]"
      />
      <div style="margin: 16px">
        <van-button round block type="info" native-type="submit"
          >登录</van-button
        >
      </div>
    </van-form>
    <router-link class="link" to='/register'>注册账号</router-link>
  </div>
</template>

<script>
import { login } from '@/api/user'
import { setToken } from '@/utils/storage'
export default {
  name: 'login-page',
  data () {
    return {
      username: '',
      password: ''
    }
  },
  methods: {
    async onSubmit (value) {
      // 解构赋值 { data } 接收 login 接口传回来的数据
      const { data } = await login(value)
      // 通过 封装好的 setToken() 方法将 token 存入本地存储
      setToken(data.token)
      // 提示 '登录成功'
      this.$toast('登录成功')
      // 登录成功后 页面跳转到 Layou
      this.$router.push('/')
    }
  }
}
</script>

<style lang="less" scoped>
.link {
  color: #069;
  font-size: 12px;
  padding-right: 20px;
  float: right;
}
</style>
